Automatic-dumping conveyer.



W. E. WALSH.

AUTOMATIC DUMPING GONVBYER.

APPLICATION FILED SEPT. 17, 1913.

. Pamsed July 21, 19m

. 2 SHEETS-SHEET 1.

...lullin k W. E. WALSH. AUTQMATIG DUMPING CONVEYER.

APPLIOATION HLBDBEPT. 11, 1913.

Patented July 21, 1914.

2 SHEETS-SHEET 2.

,TE amas Aarnivr onirica.

WILLIAM E. WALSH, OF BUTTE, MONTANA.

AUTOMATIC-DUMPING CONVEYER.

T0 nZZ whom. t may concern:

lie it known that I, lYILLIAu E. WALSH, a citizen ot the United States of America, residing` at Butte. in the county of Silverbow and State of Montana, have invented certain new and useful improvements in Arutolnatic-Dumping Conveyers, of which the following is a specification.

This invention rela-tes to improvements in automatic dumping conveyers.

The primary object of the invention is the provision of a conveyer inchuling a container which is adapted to be automatically actuated for discharging its load at predetermined points in its line of travel.

The present device is adapted for any manner of hoisting purposes whether along a horizontal, vertical or an inclined plane and at anyvpoint in which it is designed for automatically dumping its contents. This method of automatically dumping the skip is accomplished by a movement of the same through very little space by dumping from the bottom of this skip and requires a movement of the skip of about one-tenth the distance required by those skips automatically dumping by being turned so that the dumping is accomplished from the top thereof.

One adaptation of this invention to which it is especially designed is the form illustrated in tbe accompanying drawings which show a self-dumping skip openating in the vertical shaft of a mine for depositing ore either at the top thereof or at transferring levels therein.

A further material object is also to provide swinging trip members at desired levels within the shaft which may be brought into and out of engageable relations ivith the dumping mechanism of the skip and thereby to dump the latter at such levels when desired. It will be also seen that with this provision the automatic dumping of the skip is accomplished without the possibility of allowing any ofthe dumped material to fall within the mine shaft.

With these general objects in view and others that will appear as the nature of the invention is better understood. the Same consists in the novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the. drawings forming a part of. this application and in which like designating Specification of Letters Patent.

Application led September 17, 1913.

Serial No. 790,239.

numerals refer to corresponding parts throughout the several views: Figure 1 is a side elevation of one upright of the gallows frame of a mine shaft showing the skip suspended therein. Fig. 2 is a side elevation of the skip as closed and with a trip in its operative relation. Fig. 3 is asimilar view of the skip in open position. Fig. 4 is a vertical central sectional view of the closed skip', the bail being broken away. Fig. 5 is a front elevation of the upper portion of the skip, the parts being broken away. Fig. 6 is a top plan view of the skip positioned in the shaft and taken upon the section line 6-6 of the gallows frame as indicated in Fig. l. Fig. 7 is a transverse sectional view through the skip and frame upon line 7 7 of Fig. 1. and Figs. 8 and 9 are detail views of one of the swinging trips positioned respectively in operative and inoperative positions.

Referring more in detail to the drawings, it is to be understood that the mine shaft is provided with the gallows frame comprising opposite parallel sides 10, only one of the same being shown in Fig. 1 and that the skip 11 for conveyingthe ore is vertically movable Within this frame being elevated by the cable 12 passing over a sheave or drum 13 at the top of the mine and thence communicating with a suitable source of power supply such Las a hoisting engine (not shown). The ore receptacle or skip comprises a substantially rectangular bucket 14 with an inclined bottom 15, while a bail member 16 supports the same being reinforced and strengthened by the bottom cross head 17, .which is positioned upon the inclined bottom of the skip and'secured to the side bail members, a further` strengthening being accomplished by the top cross head 18 and to which latter the suspension ring 19 is pivoted and adapted for attachment to said cable 12. The guide strips 2.0 are vertically positioned upon each side of the frame acting as Ways for the skip shoes 21 oppositely arranged upon the outer faces of the bail sides.

The details of the skip construction include operable elements adapted through the engagement of desirably positioned trips to automatically open the skip. The front or longer side wall 22 is fore-shortened for about one-half its length leavin@ the front opening 23 for the discharge of tile skip contents. F or closing this exit 23 there is pro- Iatented July 21, 1914.

videata@ and@v door ai and the @nennen aprot25 which actcombinedly to open and I close the same.

The extension apron 25 is hinged-as at 26- to the lowermost front edge of the skip and .at a point removed from the center thereweight and that of the skips contents. vThe gage behind similar strips 29 projectingx slide door 24 is provided with rearwardly extending flanges 27 provided with suhstane tially rectangular strips 28 adapted to enop positely at the front of the skip and w eres by-the door is verticall slidably mounted upon the latter. Angu ar operating levers 30 are pivoted substantially centrally to the opposite bail. sides and provided with their long arms 31' engaging beneath angular ilanges 32 of the slide door, the short arms 33 of said levers terminating in anti-friction rollers 34 adapted for automatic o erative engagement with the trips hereina tende scribed upon a vertical movenlent of the ski. j .l

'Iphe side angesv 27 ofthe slide door are downwardly extended forming opposite feet 35 and whereby the downward movement of the slide door engages said feet rearwardly of the hinging point of the extension apron when the same is opened and by reason of the weight of the slide door operating to tilt upwardly said apron to its closed position.. y

Angular trip irons 36 are permanently positioned at opposite points facing each '.f other upon the gallows iframe and vadapted ."-.t o 'automatically rock the operating levers skip.

301upon an engagement therewith of the rollers. 34 during a vertical movement of the I the trip irons 30 designed to dump theiload at the top or mouth of the shaft erelpermanently 41E ositioned,- itis desirable to'4v provide movab e trips atpoin'ts withinl the .shaft and which maybe swung at will into and out of operative engagement by said lever rollers 34. For t isl urpose, leaves 37 hinged as at 38 are oppositely positioned at desired points upon the gallows frame and providedwith the trip irons 39. Suitable sockets 40 areinounted upon the frame in pro er position to be received through a per oration ot'each leaf 37 and whereby such leaf may be retained by means of a locking pin 41'- in 'either a closed posi tion as shown by the upper leaf in Fig. 1 or in its open operative position as shown by the lower leaf in said ligure.

With the skip positioned in the shaft to be vertically hoisted by the cable 12 it will be seen that should it be desirable to dump the ore with which the skip has been lled at a lower point in the shaft at a point short of the top of the mine, such as into a waste incassa rollers 34 upon an upward movementv of the skip. The engagement with the trips 39 refrein their closed positions shown in Flg. 2 totheir open positions of Fig. 3 as will be 7readil`y` apparent, the rocking of the levers l 30 upon their pivots byk means of the trips .39 raising the slide door 24 to release -the apron 25 which of its `own weight assisted by "the contentsof the skip readily opens and forms an exit chute forsuch contents. UponI such a 'dumping of the skip contents, a

lowering of the latter' disengage's the' tri s -sult in shifting the lever, doorV and apron. 'za

from the levers allowing the weight of t e slide door to lclose the apron. The leaves 37 may then be swung to their closed positions and retained by the lockpins 41. With the leaves 37 all'closed, it is obvious that the :skip freely passes the same and moves to a, y point adjacent the top of the frame where f the trips 36 'are engaged by the operating levers- 30 and the contents dumped at the top of the mine. '4

ltis noted that an elevating ofthe door 24 lreleases the apron 25 and 'that a slight presweight overbalances its upper portion soA that the same falls to its open position. AThis pressure which is necessary for initially tilting the apron is directly accomplished by the contents of the skip whenever there is any material contained therein and generally speaking, an opening of the skip being for dumpln purposes, it is primarily necessary only w en the skip contains material to be dumped. However, it is desirable to provide a skip which lwill automatically open at predetermined positions whether loaded or empty and' this is accomplished by linking the door and apron together. Side links 45 are hinged to the apron at its opposite lower corners 46 and have sliding engagement at their up er ends in the slots 47 of the door ianges 2 This mechanism as best shown in Fig. 2, exerts an upwardpull upon the links 45 whenever the door is raised and thereby the'bottom of the apron is inovedxrearf wardly, and the same becomes thereby `overbalanced, resulting in the falling of the( use, what I claim as new and desire to secure by Letters Patent of the United States is y l. A skip comprising a body portion, a slide door, a hinged extension apron, and said door adapted upon lowering to actuate said apron upon its hinge.

2. A skip comprising a. container, a bail, a front slide door, and pivoted actuating arms adapted for elevating said door to an open position, an extension apron pivotally mounted beneath said door, extension feet upon said door adapted for engaging said apron upon a downward movement of the door and whereby said apron moved upon its hinge to closed position.

3. A skip comprising an open top receptacle having an exit in the front wall thereof, a door slidably mounted upon said front Wall and adapted for partially closing said exit, actuating angular levers pivoted to the opposite sides of said receptacle and adapted upon actuation for elevating saiddoorto its open position.

4. A skip comprising an open top receptacle having an exit in the front Wall there# of, a door slidably mounted upon said front wall and adapted for partially closing Said exit, actuating angular levers pivoted tothe opposite sides of said receptacle and adapted upon actuation for elevating said door to its open position, an extension apron pivoted to the bottom of said container, said apron adapted to be normally opened 'and engageable by said door for shifting to its closed position.

. 5. A skip comprising a container having an open top and a front exit, a slide doorand a pivoted apron eombinedly closing said exit, pivoted means upon said container engaging said door for sliding the same to open positionv and automatic means adapted to open said apron simultaneously with the opening of the door.

6. A skip comprising a container having l open position, automatic means adapted t0 open said apron simultaneously with the openingl vof the door, and shiftable means positionable in the path of travel of said y pivoted means for moving the latter at will.

In testimony whereof I aliix my signature in presence of two witnesses.

- WILLIAM E. WALSH. Witnesses:

H. A. FRANK', F. I. Comm 

